BEARING AND SEAL INSPECTION
Remove hubs and check the bearings before installing Bearing Buddy®.
Replace bearings if they are damaged, rusted, or pitted.
Clean old grease and contaminants out of the hubs. Check the condition of the inner seals.
Be sure they are new, top quality, and running on a smooth spindle sealing surface.
As you reassemble the components, fill the hubs completely with a high quality, multipurpose, no.2 grade lubricant (e.g., the type used for automotive suspensions).
Don't use heavy, fibrous greases; don't mix grease types.
BEARING BUDDY® INSTALLATION
Hold the Bearing Buddy® against the hub with a small block of wood, and drive it into place with a hammer.
If Bearing Buddy® cannot be driven into the hub, or will not fit tightly into the hub, don't force it.
Your hubs may be slightly oversized or undersized.
If this occurs, or if the Bearing Buddy® is obviously too large or too small; contact your dealer.
If you install Model 1980T (threaded), apply Permatex or some other grease proof gasket cement to the Bearing Buddy® threads, and then screw Bearing Buddy® into the hub, hand tight.
HOW TO REMOVE A BEARING BUDDY®
Bearing Buddy® is held in the hub by an interference fit.
To remove Bearing Buddy®, lay a block of wood against the side of it and strike the wood with a hammer.
Place the wood on the opposite side and hit again.
Continue this procedure until you walk the Bearing Buddy® out of the hub.
Don't disassemble the Bearing Buddy® to attempt to remove it.
Original article from Bearing Buddy